Paste composition for artificial marble and method of manufacturing artificial marble using the same

Abstract

The present invention relates to a paste composition for artificial marble and a method of manufacturing the artificial marble using the same, which can solve the problems of efflorescence and durability in the existing cementitious marble and the problems of thermal resistance and acid tolerance in the existing organic binder-based marble, and can provide an insulating function to the artificial marble by using an inorganic binder such as an amorphous activated aluminosilicate compound and also using a lightweight particulate porous inorganic material. The method of manufacturing the artificial marble includes preparing paste for artificial marble by mixing 10˜20 parts by weight of white cement, 3˜10 parts by weight of amorphous activated aluminosilicate, 40˜70 parts by weight of broken-stone chip, 5˜10 parts by weight of water, 0.1˜1 part by weight of water-reducing agent and 10˜30 parts by weight of lightweight particulate porous inorganic material; pouring and vibration-molding the paste in a mold; curing the paste; inducing a hydrothermal reaction of cured artificial marble at high temperature and high pressure; and machining cured product.

1 . A paste composition for manufacturing artificial marble, which is composed of 10˜20 parts by weight of white cement, 3˜10 parts by weight of amorphous activated aluminosilicate, 40˜70 parts by weight of broken-stone chip, 5˜10 parts by weight of water, 0.1˜1 part by weight of water-reducing agent and 10˜30 parts by weight of lightweight particulate porous inorganic material. 
     
     
         2 . The paste composition for manufacturing artificial marble according to  claim 1 , wherein the paste composition passes through a dissolution reaction of aluminosilicate, a polymerization reaction by recombination of aluminosilicate, and a coupling reaction of calcium with silicate. 
     
     
         3 . The paste composition for manufacturing artificial marble according to  claim 1 , wherein the amorphous activated aluminosilicate is one, or two or more selected from metakaolin, fly ash, diatomite and silica fume. 
     
     
         4 . The paste composition for manufacturing artificial marble according to  claim 1 , wherein the lightweight particulate porous inorganic material is foam glass having a low specific gravity. 
     
     
         5 . A method of manufacturing artificial marble, comprising:
 preparing paste for artificial marble by mixing 10˜20 parts by weight of white cement, 3˜10 parts by weight of amorphous activated aluminosilicate, 40˜70 parts by weight of broken-stone chip, 5˜10 parts by weight of water, 0.1˜1 part by weight of water-reducing agent and 10˜30 parts by weight of lightweight particulate porous inorganic material;   pouring and vibration-molding the paste in a mold;   curing the paste;   inducing a hydrothermal reaction of cured artificial marble at high temperature and high pressure; and   machining cured product.   
     
     
         6 . The method according to  claim 5 , wherein the vibration molding is performed in the mold for 30 seconds ˜3 minutes at 1,000˜3,500 rpm so that the broken-stone chip sinks to a bottom of the mold and the lightweight particulate porous inorganic material chip having a low specific gravity floats to a surface of the mold, thereby forming two layers. 
     
     
         7 . The method according to  claim 5 , wherein the amorphous activated aluminosilicate is one, or two or more selected from metakaolin, fly ash, diatomite and silica fume. 
     
     
         8 . The method according to  claim 5 , wherein the lightweight particulate porous inorganic material is foam glass having a low specific gravity.